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Second Battle of Bach Dang: Dai Viet destroys the Yuan-Mongol fleet

9 April 1288·Military & conflict·Northern Vietnam (Bach Dang River estuary, Quang Ninh)·
9 April 1288Date
Military & conflictCategory
23Empires active
Date
9 April 1288
Category
Military & conflict
Region
Northern Vietnam (Bach Dang River estuary, Quang Ninh)
Era
Post-Classical / Medieval
Significance

On 9 April 1288, the forces of Dai Viet, commanded by the Tran-dynasty grand commander Tran Hung Dao, annihilated the invading Yuan-Mongol fleet on the estuary of the Bach Dang River in present-day Quang Ninh Province, northern Vietnam.

The battle was the decisive engagement of the third Mongol invasion of Dai Viet launched by Kublai Khan, whose naval force under Admiral Omar was attempting to withdraw to China after failing to secure the captured capital of Thang Long. Reviving the tide-timed stratagem first used by Ngo Quyen against Southern Han forces in 938, Tran Hung Dao had iron-tipped wooden stakes driven into the riverbed; Vietnamese skirmishers lured the Yuan ships upriver at high tide, and as the water fell the fleet was impaled, trapped, and set ablaze. Some 400 Yuan vessels were destroyed or captured and Admiral Omar was taken prisoner, ending Mongol ambitions to subjugate Dai Viet and the wider region. The victory secured the independence of Dai Viet, cemented Tran Hung Dao's status as one of Vietnam's foremost national heroes, and remains among the most celebrated battles in Vietnamese history.

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